diff --git a/day7/day7.go b/day7/day7.go
index 2967b0d..5095693 100644
--- a/day7/day7.go
+++ b/day7/day7.go
@@ -17,6 +17,7 @@ type DirNode struct {
 func main() {
 	args := os.Args[1:]
 	lines := helper.ReadTextFile(args[0])
+	defer helper.MeasureTime("Main")()
 	root := DirNode{nil, 0, map[string]*DirNode{}}
 	var currentNode *DirNode
 	currentNode = &root
diff --git a/helper/helper.go b/helper/helper.go
index 846efbb..b53a710 100644
--- a/helper/helper.go
+++ b/helper/helper.go
@@ -39,7 +39,7 @@ func MeasureTime(process string) func() {
 	fmt.Printf("Start %s\n", process)
 	start := time.Now()
 	return func() {
-		fmt.Printf("Time taken by %s is %v\n", process, time.Since(start))
+		fmt.Printf("Time taken by %s is %v\n", process, time.Since(start).Nanoseconds())
 	}
 }